242402520 has 128 divisors (see below), whose sum is σ = 770135040. Its totient is φ = 60910080.

The previous prime is 242402519. The next prime is 242402521. The reversal of 242402520 is 25204242.

242402520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (242402519) and next prime (242402521).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242402521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195342 + ... + 196578.

It is an arithmetic number, because the mean of its divisors is an integer number (6016680).

Almost surely, 2^242402520 is an apocalyptic number.

242402520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242402520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385067520).

242402520 is an abundant number, since it is smaller than the sum of its proper divisors (527732520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242402520 is a wasteful number, since it uses less digits than its factorization.

242402520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1341 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 242402520 is about 15569.2812936243. The cubic root of 242402520 is about 623.5132833486.

Adding to 242402520 its reverse (25204242), we get a palindrome (267606762).

The spelling of 242402520 in words is "two hundred forty-two million, four hundred two thousand, five hundred twenty".